FUNCTION n.
ing are of the circle. Let AB be an arc in a circle, whose radius OA is unity let AC be a quadrant, and let OC, DB, and AF be drawnpependicular to OA, and EB and CG parallel to OA, and let OB be produced to G and F. E Then BD is the sine of the arc AB; OD or EB is the cosine, AF is the tangent, CG is the cotangent, OF…
HERMES n.
ndaries, and therefore bearing in some cases a head, or head and shoulders, placed upon a quadrangular pillar whose height is that of the body belonging to the head, sometimes having feet or other parts of the body sculptured upon it. These figures, though often representing Hermes, were used for other divinities, and…
INDEX n.
us (below). -- Index finger. See Index, 5. -- Index glass, the mirror on the index of a quadrant, sextant, etc. -- Index hand, the pointer or hand of a clock, watch, or other registering machine; a hand that points to something. -- Index of a logarithm (Math.), the integral part of the logarithm, and always one les…
QUARTER n.
; opposite, or nearly opposite, a vessel's quarter. -- Quarter aspect. (Astrol.) Same as Quadrate. -- Quarter back (Football), the player who has position next behind center rush, and receives the ball on the snap back. -- Quarter badge (Naut.), an ornament on the side of a vessel near, the stern. Mar. Dict. -- Qua…